BRAINCAKEAngular Speed
The angular speed ω of an object moving in a circle is the angle swept out by the radius per unit time, ω = Δθ/Δt. It is measured in radians per second (rad s-1).
In one complete revolution the object turns through 2π radians in one period T, so ω = 2π/T. Since the frequency f = 1/T, this can also be written as ω = 2πf.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
Key terms in this lesson
- radian
- The angle subtended at the centre of a circle by an arc equal in length to the radius of the circle.
- angular displacement
- The angle, measured in radians, through which an object has turned or been displaced.
More in Circular Motion
- Uniform Circular Motion
- Angular Displacement
- Centripetal Acceleration
- Proof - centripetal acceleration
- Centripetal Force
- On the Road
- The London Eye
- A Spin Dryer
All 9 lessons in Circular Motion · All OCR A-level Physics topics